❯ php --version
PHP 8.0.0RC2 (cli) (built: Oct 18 2020 12:10:31) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.0-dev, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.0RC2, Copyright (c), by Zend Technologies
❯ php vendor/bin/simple-phpunit tests/Mbstring
PHP Warning:  Private methods cannot be final as they are never overridden by other classes in /home/azjezz/Projects/polyfill/vendor/bin/.phpunit/phpunit-6.5/src/Util/Configuration.php
 on line 176

Warning: Private methods cannot be final as they are never overridden by other classes in /home/azjezz/Projects/polyfill/vendor/bin/.phpunit/phpunit-6.5/src/Util/Configuration.php on l
ine 176
PHPUnit 6.5.14 by Sebastian Bergmann and contributors.

Testing tests/Mbstring
E.EFFEFFF....FF.E....E................................WWWWWWWWWWW 65 / 88 ( 73%)
WWWWWWWWWWWWWWWWWWWWWWW                                           88 / 88 (100%)

Time: 237 ms, Memory: 16.00MB

There were 5 errors:

1) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testStubs
ValueError: mb_substitute_character(): Argument #1 ($substitute_character) must be "none", "long", "entity" or a valid codepoint

/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:31

2) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testDecodeNumericEntity
TypeError: mb_decode_numericentity(): Argument #1 ($string) must be of type string, stdClass given

/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:62

3) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testEncodeNumericEntity
TypeError: mb_encode_numericentity(): Argument #1 ($string) must be of type string, stdClass given

/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:123

4) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testStrSplit
ValueError: mb_str_split(): Argument #2 ($length) must be greater than 0

/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:330

5) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testLanguage
ValueError: mb_language(): Argument #1 ($language) must be a valid language, "ABC" given

/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:406

--

There were 34 warnings:

1) Warning
The polyfill for "mb_convert_encoding" has an incorrect signature.

Expected : $string, $to_encoding, $from_encoding
Actual   : $s, $to, $from

2) Warning
The polyfill for "mb_decode_mimeheader" has an incorrect signature.

Expected : $string
Actual   : $s

3) Warning
The polyfill for "mb_encode_mimeheader" has an incorrect signature.

Expected : $string, $charset, $transfer_encoding, $newline, $indent
Actual   : $s, $charset, $transferEnc, $lf, $indent

4) Warning
The polyfill for "mb_decode_numericentity" has an incorrect signature.

Expected : $string, $map, $encoding
Actual   : $s, $convmap, $enc

5) Warning
The polyfill for "mb_encode_numericentity" has an incorrect signature.

Expected : $string, $map, $encoding, $hex
Actual   : $s, $convmap, $enc, $is_hex

6) Warning
The polyfill for "mb_convert_case" has an incorrect signature.

Expected : $string, $mode, $encoding
Actual   : $s, $mode, $enc

7) Warning
The polyfill for "mb_internal_encoding" has an incorrect signature.

Expected : $encoding
Actual   : $enc

8) Warning
The polyfill for "mb_language" has an incorrect signature.

Expected : $language
Actual   : $lang

9) Warning
The polyfill for "mb_check_encoding" has an incorrect signature.

Expected : $value, $encoding
Actual   : $var, $encoding

10) Warning
The polyfill for "mb_detect_encoding" has an incorrect signature.

Expected : $string, $encodings, $strict
Actual   : $str, $encodingList, $strict

11) Warning
The polyfill for "mb_detect_order" has an incorrect signature.

Expected : $encoding
Actual   : $encodingList

12) Warning
The polyfill for "mb_parse_str" has an incorrect signature.

Expected : $string, $result
Actual   : $s, $result

13) Warning
The polyfill for "mb_strlen" has an incorrect signature.

Expected : $string, $encoding
Actual   : $s, $enc

14) Warning
The polyfill for "mb_strpos" has an incorrect signature.

Expected : $haystack, $needle, $offset, $encoding
Actual   : $s, $needle, $offset, $enc

15) Warning
The polyfill for "mb_strtolower" has an incorrect signature.

Expected : $string, $encoding
Actual   : $s, $enc

16) Warning
The polyfill for "mb_strtoupper" has an incorrect signature.

Expected : $string, $encoding
Actual   : $s, $enc

17) Warning
The polyfill for "mb_substitute_character" has an incorrect signature.

Expected : $substitute_character
Actual   : $char

18) Warning
The polyfill for "mb_substr" has an incorrect signature.

Expected : $string, $start, $length, $encoding
Actual   : $s, $start, $length, $enc

19) Warning
The polyfill for "mb_stripos" has an incorrect signature.

Expected : $haystack, $needle, $offset, $encoding
Actual   : $s, $needle, $offset, $enc

20) Warning
The polyfill for "mb_stristr" has an incorrect signature.

Expected : $haystack, $needle, $before_needle, $encoding
Actual   : $s, $needle, $part, $enc

21) Warning
The polyfill for "mb_strrchr" has an incorrect signature.

Expected : $haystack, $needle, $before_needle, $encoding
Actual   : $s, $needle, $part, $enc

22) Warning
The polyfill for "mb_strrichr" has an incorrect signature.

Expected : $haystack, $needle, $before_needle, $encoding
Actual   : $s, $needle, $part, $enc

23) Warning
The polyfill for "mb_strripos" has an incorrect signature.

Expected : $haystack, $needle, $offset, $encoding
Actual   : $s, $needle, $offset, $enc

24) Warning
The polyfill for "mb_strrpos" has an incorrect signature.

Expected : $haystack, $needle, $offset, $encoding
Actual   : $s, $needle, $offset, $enc

25) Warning
The polyfill for "mb_strstr" has an incorrect signature.

Expected : $haystack, $needle, $before_needle, $encoding
Actual   : $s, $needle, $part, $enc

26) Warning
The polyfill for "mb_http_output" has an incorrect signature.

Expected : $encoding
Actual   : $enc

27) Warning
The polyfill for "mb_strwidth" has an incorrect signature.

Expected : $string, $encoding
Actual   : $s, $enc

28) Warning
The polyfill for "mb_substr_count" has an incorrect signature.

Expected : $haystack, $needle, $encoding
Actual   : $haystack, $needle, $enc

29) Warning
The polyfill for "mb_output_handler" has an incorrect signature.

Expected : $string, $status
Actual   : $contents, $status

30) Warning
The polyfill for "mb_convert_variables" has an incorrect signature.

Expected : $to_encoding, $from_encoding, $var, $vars
Actual   : $toEncoding, $fromEncoding, $a, $b, $c, $d, $e, $f

31) Warning
The polyfill for "mb_ord" has an incorrect signature.

Expected : $string, $encoding
Actual   : $s, $enc

32) Warning
The polyfill for "mb_chr" has an incorrect signature.

Expected : $codepoint, $encoding
Actual   : $code, $enc

33) Warning
The polyfill for "mb_scrub" has an incorrect signature.

Expected : $string, $encoding
Actual   : $s, $enc

34) Warning
The polyfill for "mb_str_split" has an incorrect signature.

Expected : $string, $length, $encoding
Actual   : $string, $split_length, $encoding

--

There were 7 failures:

1) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testDecodeNumericEntityWarnsOnInvalidInputType
Failed asserting that exception of type "TypeError" matches expected exception "PHPUnit\Framework\Error\Warning". Message was: "mb_decode_numericentity(): Argument #1 ($string) must be
 of type string, stdClass given" at
/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:105
.

2) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testDecodeNumericEntityWarnsOnInvalidEncodingType
Failed asserting that exception of type "TypeError" matches expected exception "PHPUnit\Framework\Error\Warning". Message was: "mb_decode_numericentity(): Argument #3 ($encoding) must
be of type ?string, stdClass given" at
/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:114
.

3) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testEncodeNumericEntityWarnsOnInvalidInputType
Failed asserting that exception of type "TypeError" matches expected exception "PHPUnit\Framework\Error\Warning". Message was: "mb_encode_numericentity(): Argument #1 ($string) must be
 of type string, stdClass given" at
/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:161
.

4) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testEncodeNumericEntityWarnsOnInvalidEncodingType
Failed asserting that exception of type "TypeError" matches expected exception "PHPUnit\Framework\Error\Warning". Message was: "mb_encode_numericentity(): Argument #3 ($encoding) must
be of type ?string, stdClass given" at
/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:170
.

5) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testEncodeNumericEntityWarnsOnInvalidIsHexType
Failed asserting that exception of type "TypeError" matches expected exception "PHPUnit\Framework\Error\Warning". Message was: "mb_encode_numericentity(): Argument #4 ($hex) must be of
 type bool, stdClass given" at
/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:180
.

6) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testStrpos
Failed asserting that 0 is false.

/home/azjezz/Projects/polyfill/tests/Mbstring/MbstringTest.php:277

7) Symfony\Polyfill\Tests\Mbstring\MbstringTest::testStrposEmptyDelimiter
Failed asserting that exception of type "PHPUnit\Framework\Error\Warning" is thrown.

ERRORS!
Tests: 88, Assertions: 500, Errors: 5, Failures: 7, Warnings: 34.

~/Projects/polyfill verify-signature
❯